384 
S. MATSUMURA 
broadest at the part of the cornicles; cornicles fuscous, large, short, at the 
mouth parts yellowish; the lower genital plate rounded at the hind margin, 
legs yellowish, tibiae at the apices and tarsi, fuscous. 
Length of body 2.5 mm.; exp. tegm. 9.6 mm.; antennae 1.2 mm. 
Hab. — Hokkaido (Sapporo). 
F. P. — Abies sachalinensis. 
Nom. Jap. — Todo-cliairo-oabiira. 
20. Aphis acanthopanaci n. sp. 
Apterous viviparous female — Body daj'k green, oval, on both ends abrupt- 
ly narrowed; antennae greenish yellow, slender, much shorter than the body, 
with a few hairs, the 3rd joint without sensoria, much longer than the 4th, 
anterhinarial of the 6th joint more than 3 times as long as the postrhinarial ; 
pronotal lateral tubercles large, rounded; abdomen broadly oval, cornicles 
very long, reaching far beyond the cauda, somewhat curved outwardly, cylin- 
drical, near the cornicle with a small conical tubercle ; cauda small, cylin- 
drical, rounded at the apex; legs greenish yellow, tibial tips and tarsi some- 
what infuscated. 
Length of body 2.-2.3 nim.; antennae 1.6 mm.; cornicles 0.5-O.7 mm. 
Hab. — Hokkaido (Sapporo). 
F. P. — Acanthopanax ricinifolium. 
Nom. Jap. — Senno-abum. 
Allied somewhat to A. sambiisi L., but in A. acantkopanacis antennae are 
much more slender and longer, cornicles also being much longer. 
21. Aphis filipendulae n. sp. 
Apterous viviparous female — Body dark greenish brown, long oval; an- 
tennae much shorter than the body, greenish yellow, at the base and apex 
darker; the 3rd joint much longer than the 4th, on the outerside with 2 or 3 
very small sensoria, the 4th somewhat longer than the 5th, anterhinarial 
nearly 1 \ times as long as the postrhinarial ; rostrum reaches beyond the 2nd 
